Currently, the metadata loader requires that a component (chapter, graph, table) has the same order number in all languages. If not, there is a mismatch and order numbers must be changed manually. If the mismatch is noticed and corrected late in the process the result is that the order of components is different in iLibrary and in the book.
Moreover, this means that usually the English alphabetical order is applied to other languages where this order doesn't make sense. This is particularly relevant for the country specific component.
For instance, in French books, "Allemagne" would normally be the first country, but because of the strict application of order number, "Allemagne" is often placed after "France" and before "Grèce", "République Tchèque" comes after "Chili" and before "Danemark", etc.